Variable scopes w\ examples (Local vs Global vs Block vs Nested)

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In programming, a scope is the area of code where you can access a certain variable in order to read it, change its value, and work with that variable in general.
There are four types of scopes:
global scope
local/function scope
block scope
nested scope
In this video, I'll show you examples of each scope and explain the advantages and disadvantages, as well as when to use each variable scope.

Contents:
00:00 - Summary of what you'll learn in this video
00:31 - What is scope? Types of scopes?
02:28 - Local/function scope w\ examples
06:44 - When to use local scope variables?
08:03 - Global scope w\ examples
11:40 - When to use global scope variables?
13:01 - Block scope w\ examples
16:00 - Nested scope w\ examples

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